Tina is waiting at the bus stop. She sees and hears an ambulance as it approaches and passes by her. Which two changes in the loudness of the siren does Tina hear?

What are the two most common minerals located in Earth's crust

Think of five different animals and make a list of the characteristics they share

Newtons prism experiments showed that white sunlight is made up of

Two pucks collide with each other. after the collision they do not stick together. is kinetic energy conserved in the collision?

Object a and object b are both in motion when they collide with each other. They then continue in a new direction unaffected by any other force this is a

A 2.25-kg block is released from rest on a ramp of height h. when the block is released, it slides without friction to the bottom of the ramp, and then continues across a surface that is frictionless except for a rough patch of width 15.

Which of the following are steps for balancing chemical equations? Check all that apply. ] A. Multiply the reactants to get the products. B. Change subscripts. O C.

1. Why does the water vapour in clouds condense? 2. Explain why you can see clouds but not see the water vapour in the air

What are some similarities between electricity and gravity?

What's the difference between solids and liquids?